Punching and spacing machine.



M. M. BEASLEY. PUNGHING AND SPAGING MACHINE. APPLIOATION FILED JULY 1 1, 1908.

937,279. Patented Oct. 19,1909.

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I I M. M. BEASLEY. runonme AND smcme MACHINE APPLIOATION FILED JULY 11, 1908. 937,279, Patented Oct. 19, 1909.

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MEET 1V1. IBEASLEY, OF SAN BERNARDINO, CALIFORNIA.

PUNCI-IING AND SPACING MACHINE.

Specification of Letters Patent.

Patented Oct. 19, 1999.

Application filed. July 11, 1908. Serial No. 443,165.

To all whom it may concern:

Be it known that I, MEET M. BEASLEY, a citizen of the United States, residing at San Bernardino, county of San Bernardino, State of California, have invented a new and useful Punching and Spacing Machine, of which the following is a specification.

This invention relates to improvements in punching and spacing machines of the type shown and described in United States Letters Patent No. 887,910, dated May 19, 1908, being designed for punching sheet metal either flat or of tubular construction, such as in the ends of pipes, elbows, etc., and one object is to provide an improved means for imparting an intermittentmovement to the work under the punch, so that each perforation made by the punch will be automatically spaced a requisite distance from the other perforations without requiring a workman to draw along the work and line it up under the punch.

Another object of the invention is to provide a stop to limit the forward movement of the table, thus insuring the proper spacing of the perforations.

Another object of the invention is to so construct the punching mechanism that the punch will move in a plane at right angles to the work.

Other objects and advantages relate to details of construction and operation which will hereinafter be pointed out.

In the accompanying drawings :-Figure 1 is a front elevation. Fig. 2 is a side elevation. Fig. 3 is a plan View of a portion of the carriage and adjacent part of the spacing mechanism.

1 designates the main frame of the ma chine which is provided with journals 2 in which is mounted a shaft 3 carrying a fly wheel 4. As shown in Fig. 1, a bracket 5 which is bolted to the frame 1 supports a die arm 6. A standard 7 projects up from the die arm 6. Secured to the side of the die arm 6 is a punch holding and guiding bracket 8 adapted to receive the punch 9 which is mounted to slide freely therein with a vertical movement. Secured to the die arm 6 in any suitable manner is a die 10 with which the punch 9 coacts. A stripper 11 is mounted upon the bracket 8.

Pivoted to the standard 7 above the die arm 6 is a punch lever 12 provided at its outer end with a head 13 having a driving face 14. The punch lever 12 has a slotted end 15 within which an eccentric 16 operates, the eccentric being mounted on the shaft 3. By rotating the shaft 3 the cam 16 acting in slotted end 15 rocks the punch arm 12, the head 13 of which drives the punch 9 into the die 10. Secured to the punch lever 12 is a lifting foot 17 which engages with the under side of the shouldered portion 18 of the punch 9. As the punch lever 12 rocks upward the lifting foot 17 raises the punch 9 from the die 10. This part of the device is designed particularly for punching holes in the ends of pipes, elbows and the like, the end of the pipe to be punched being slipped over the die arm 6 and seated upon the die 10 under the punch 9.

A crank pin 19 projects from the end of shaft 3 outside the eccentric 16 and operates a connecting rod 20, the lower end of which is pivoted to a punch rod 21 which is slidably mounted in the way 22 secured to the frame 1. Secured to the lower end of the punch rod 21 is a punch 23, the punch rod 21 having a chuck 24 of any suitable construction for the attachment of the punch 23. 'As the shaft 3 rotates the punch is reciprocated by the sliding punch rod 21.

The frame 1 has a foot 25 in which the die 26 is secured in any suitable manner underneath the punch rod 21. A track rail 27 is arranged on the front near the frame 1 and extends past the foot 25 of the frame 1, and guided by the track 27, and partially supported thereby, is a carriage 28 which near one edge is provided with notched lugs 29 which engage the track rail 27 and which carriage at its outer edge is supported by rollers 30 which ride on the floor, thus the track 27 guides the carriage in a rectilinear path and supports the inner edge of the carriage, while the rollers 30 support the outer edge of the carriage. As clearly shown in Fig. 3, the carriage along its inner edge is provided with a rack 31 which is operated by a dog 32 pivoted to a lever 33, the latter having a spring 34 which bears against the dog 32 to restore the dog. The lever 33 is pivoted at 35 to the frame 1 to swing in a longitudinal plane as shown in Fig. 2. A bracket 36 is bolted to the frame 1 and pivoted at 37 to the bracket 36 is an operating lever 38, the upper end of which is actuated by a cam 39 mounted on shaft 3, and the lower end of the operating lever 38 is forked and engages the lever 33. A coil spring 40 which is attached to the frame 1 and to the upper end of operating lever 38 serves to retract the lever after the cam 39 has ad vanced the lever, thus as shaft 3 revolves the cam 39 rocks lever 38, and the latter rocks lever 33 which actuates dog 32 which operates on the rack 31 to advance the carriage 28 step by step.v

The work, designated 41, may be clamped to the carriage in any preferred manner, not necessary to show, and that edge of the work which is to be punched projects over the die 26 as shown in Fig. 2. The cam 34 is so positioned, with respect to crank pin 19, that the dog is caused to actuate the carriage forward while the punch 23 is withdrawn from the work, while when the punch 23 is in the work the dog 32 is recovering and being engaged with the succeeding tooth of the rack, so that upon withdrawal of the punch from the work the dog will actuate the carriage one step and bring the work in position for the next punching operation.

To effectually limit the movement of the carriage 28 and provide a positive stop to prevent the carriage from being carried past the proper spacing desired by the momentum of the carriage and the work carried thereby, a device is provided having a dog 42 pivoted to the foot 25 of the frame of the machine,

adapted to engage with a rack 43 on the carriage 28, the teeth of rack 43 facing in a clirection opposite to the teeth of the rack 31. The dog 42 has an extension 44 provided with a cam slot 45 which is engaged by a pin 46 on the under side of rock lever 33. As the carriage is driven forward by the dog 32 carried on the rock lever 33, the pin 46 on the rock lever travels in the part of the cam slot 45 which is concentric with the pivot of the rock lever 33 until it is near the end of its movement when it engages the eccentric portion of the cam slot and moves the dog 42 into engagement with the rack 43 which positively stops the forward movement of the carriage. As the rock lever 33 returns to its normal position dog 42 is disengaged from the rack 43.

The machine may be operated either by power or by hand. In the drawings I have shown a hand operated fly wheel 4.

What I claim is 1. In combination, a frame, a die arm ex tending laterally from the frame and sup porting adie, a punch guide mounted on the frame, a punch mounted to slide vertically therein, a punch lever pivoted above the die arm and unconnected with and bearing against the upper end of the punch, a shaft mounted on the frame, means on the shaft for actuating the punch lever, and means on the punch lever below the punch guide for lifting the punch.

2. In combination, a frame, a die arm extending laterally from the frame and supporting a die, a punch guide mounted on the frame, a punch mounted to slide vertically therein, a punch lever pivoted above the die arm, a lifting foot mounted on said punch lever, a shaft mounted on the frame, and means on the shaft for actuating the punch lever.

3. In combination, a frame, a die arm extending laterally from the frame and sup porting a die, a punch guide mounted on the frame, a punch mounted to slide vertically therein, a punch lever pivoted above the die arm, a lifting foot mounted on said punch lever, a punch rod mounted to slide vcrtically on the frame and carrying a punch, a shaft mounted on the frame, and means on the shaft for actuating the sliding punch rod and the punch lever.

4. In combination, a frame, a die arm extending laterally from the frame and sup porting a die, a punch guide mounted on the frame, a punch mounted to slide vertically therein, a punch lever pivoted above the die arm, a lifting foot mounted on said punch lover, a punch rod mounted to slide vertically on the frame and carrying a punch, a shaft mounted on the frame, means on the shaft for actuating the sliding punch rod and the punch lever, a carriage movable past the frame for supporting work under the second named punch, and means actuated by said shaft for actuating said carriage step by step.

5. In a punching and spacing machine, a frame, a shaft journaled therein, a cam carried by the shaft, an operating lever pivoted to the frame and actuated in one direction by said cam, a spring for actuating said operating lever in the other direction, a lever pivoted to the frame and engaging a slotted portion of said operating lever, a dog carried by the second named lever, a carriage for supporting the work and provided with a rack coacting with said dog, a pin carried by said second named lever, a dog pivoted to the frame and having an extension with a cam slot engaged by said pin, a rack upon said carriage coacting with said second named dog, a sliding punch rod mounted on the frame, and carrying a punch, and a crank on the shaft connected with the punch rod for operating the same.

6. In a punching and spacing machine, a frame, a shaft ournaled therein, a cam carried by the shaft, an operating lever pivoted to the frame and actuated in one direction by said cam, a spring for actuating said operating lever in the other direction, a lever pivoted to the frame and engaging a slotted portion of said operating lever, a dog carried by the second named lever, a carriage for supporting the work and provided with a rack coaetmg with said dog, a pin carried by said second named lever, a dog pivoted to the frame and having an extension with a cam slot therein, said cam slot having part of its length concentric and the remaining part of said cam slot being eccentric to the pivot of said second named dog and engaged by the pin on said second named lever, a rack upon said carriage coacting with said second named dog, a sliding punch rod mounted on the frame and carrying a punch, and a crank on the shaft connected with the punch rod for operating the same.

7. In a punching and spacing machine, a frame, a shaft journaled therein, a cam carried by the shaft, an operating lever pivoted to the frame and actuated in one direction by said cam, a spring for actuating said operating lever in the other direction, a lever pivoted lever in the other direction, a lever pivoted to the frame and engaging a slotted portion of said operating lever, a dog carried by the sec- 0nd named lever, a carriage for supporting the Work and provided with a rack coacting with said dog, a pin carried by said second named lever, a dog pivoted to the frame and having an extension with a cam slot therein, said cam slot having part of its length concentric and the remaining part of said cam slot be ing eccentric to the pivot of said second named dog and engaged by the pin on said second named lever, a rack upon said carriage coacting with said second named dog, the engaging face of the teeth of said racks being faced in opposite directions, a sliding punch rod mounted on the frame, and carrying a punch, and acrank on the shaft connected with the punch rod for operating the same.

In testimony whereof, I have hereunto set my hand at San Bernardino California this 3d day of July 1908.

MEET M. BEASLEY.

In presence of W. E. LEONARD, L. BROOKS. 

